Home / 20,835.09-31,233.87-7,684.20

Finding the Fourth Proportional to 20,835.09, 31,233.87 and 7,684.20

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Solution

The fourth proportional to 20,835.09, 31,233.87 and 7,684.20 is: 11,519.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.09 : 31,233.87 = 7,684.20 : x
  2. Step 2: Convert to fraction form
    20,835.09/31,233.87 = 7,684.20/x
  3. Step 3: Cross multiply
    20,835.09x = 31,233.87 × 7,684.20
  4. Step 4: Simplify right side
    20,835.09x = 240,007,303.85
  5. Step 5: Solve for x
    x = 240,007,303.85/20,835.09
  6. Step 6: Final answer
    x = 11,519.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.